[shoot]

YKB Telefunken?????

yes,early telefunken don't have <> on bottom,and some of their tubes use similer code number as philips.⊥ is telefunken berlin factory code.

[FullRangeMan]

They are professionals.

Yeah, this guys worked all its life with tubes, something they should know.

[shoot]

Yeah, this guys worked all its life with tubes, something they should know.

that's adrianc not me,I'm a new comer

[adrianc]

that's adrianc not me,I'm a new comer

Don't say that,I might be have a little bit valves in my collection,that's it,still a lot to learn about Valves

[shoot]

seems to be 1954's telefunken ecc81

[adrianc]

Shinny plates with Telefunken small Fat getter ?? not made by Telefunken

[rodama]

The stamp looks like a triangle but printed made in Holland,wrong printed probably,  Believe it or not I broke three of these ECC83, FXXX

Sometimes shit happens...  

[rodama]

Shinny plates with Telefunken small Fat getter ?? not made by Telefunken

Early Siemens Munich made?

[adrianc]

Yes,but guess what is the printing on the other side?

[adrianc]

Back

[adrianc]

More shiny plates with stripe bar getter

[rodama]

These last pair looks like Valvo 1955 Hamburg made on left and 1954 on the right...

[rodama]

My only tube I've never been able to identify, ecc82 labeled Haltron... no acid or bottom code, no glass seals at top like show on philips factories ones, wide rectangular getter with single support, big hole on mica like brimar.... someone knows?

[adrianc]

seems to be 1954's telefunken ecc81

Hi shoot,I think this is the same as yours but without  the Valvo date code.The earliest Telefunken valves doesn't have diamond mark and fat getter and most of their 9 pin valves like EL84, ECC81,82s are comes with printing 00 at the end like B.hb.00, and they all with Telefunken logos,I thinks yours are bought by Valvo and print their name on it as I believed it's not necessarily for Telefunken to use other brands name for their products.Don't get too serious on it and I might be wrong

[adrianc]

These last pair looks like Valvo 1955 Hamburg made on left and 1954 on the right...

They are both the same with DX mCP code but with Mullard logos

 

[adrianc]

My only tube I've never been able to identify, ecc82 labeled Haltron... no acid or bottom code, no glass seals at top like show on philips factories ones, wide rectangular getter with single support, big hole on mica like brimar.... someone knows?

Haltron never manufacture valves and just a distributor, would it be  a Sylvania???

[FullRangeMan]

CITRON ?

[shoot]

Hi shoot,I think this is the same as yours but without  the Valvo date code.The earliest Telefunken valves doesn't have diamond mark and fat getter and most of their 9 pin valves like EL84, ECC81,82s are comes with printing 00 at the end like B.hb.00, and they all with Telefunken logos,I thinks yours are bought by Valvo and print their name on it as I believed it's not necessarily for Telefunken to use other brands name for their products.Don't get too serious on it and I might be wrong

In early 1952,53.telefunken and siemens the two company are still togather,so some of the early siemens tubes also use fat getter.
as to B.xx.00 code,some of early telefunken use it,some also use similer code like philips,On code list,⊥ is telefunken berlin factory code.

1952's telefunken ecc81 ,decline square getter,black mercury,fat bottle,silver feet.



1953 and 1954 telefunken ecc81,1954's has <> on bottom

[rodama]

1953 and 1954 telefunken ecc81,1954's has <> on bottom

This one without diamond bottom is code B fp 02=february 1954, so according to your B vp 02=august 1954 the diamond for Telefunken ecc81 was first introduced somewhere between march and august 1954 

[rodama]

Haltron never manufacture valves and just a distributor, would it be  a Sylvania???

It does look like a sylvania, maybe the plate features but the getter is type never seen in a sylvania... I was thinking about Japan or Italy.....

CITRON ?

Do you mean Hytron?